package demo1;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Demo {
    public static void main(String[] args) throws Exception {
        User user = new User();
        user.sayHello();


        Class c =Class.forName("demo1.User");
        User user2 = (User) c.newInstance();
        user2.sayHello();


        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("demo1");
        User user3 = context.getBean(User.class);
        user3.sayHello();
    }
}
